Extreme is an American rock band, headed by frontmen Gary Cherone and Nuno Bettencourt, that reached the height of their popularity in the late 1980s and early 1990s. Among some of Extreme's musical influences are Van Halen, Queen, Aerosmith and Led Zeppelin. The band played at The Freddie Mercury Tribute Concert in 1992 and Cherone joined Van Halen in 1996.